Lock full-screen NAV?

I don't know what setting changed, but for several weeks now, I haven't been able to get my navigation system to keep using the full screen. After a minute or so, it drops into a split-screen mode in which the right half is devoted to audio, which is incredibly stupid because all it is doing is wasting half the screen to tell me I have the audio off.

It did not do this before.

I can't find a setting to make the "home" screen full-screen NAV.

I don't really care if the "home" screen is full screen NAV or 50/50 NAV/audio, but when I choose NAV I want it to keep using the full screen for NAV until I tell it to stop.

 

No, I don't use Entune.

Yeah, that's the way mine used to work.

 

OK, I'll look for that.

(Later) Yeah, "Auto Change to Home Screen" was checked. I'm pretty sure neither my wife nor I changed it since, we didn't even know it was there. Thanks. I haven't had a chance to test it yet but I'm sure that's it.

It's possible that the setting was somehow accidentally changed when the dealer had it in to apply the parking-assistance update.

 

Mostly we love our 2016 Prius, but the NAV is a sore spot. It sucks so badly I'd just go on using our little suction-cup Garmin except that there is literally no place to put it.

The NAV has really been a disappointment, and, in particular, the quality of the database sucks. On our last trip, it said it knew where a specific KOA campground was, and it guided us into a suburban neighborhood and took us to the front of someone's house and said we "had arrived." The campground was actually five miles away. Looking for a restaurant in St. Cloud, MN, in a neighborhood with mostly fast food, it listed what it said was a restaurant named "Abda Salad," and we believed it, and it led us into an apartment complex with no restaurants of any kind. I was strongly tempted to go into the building just to confirm our guess that it was actually somebody's name.

 

That was it. Confirmed. Thank you. Only mystery now is how the setting got changed.